Door-check.



No. 655,00l. Patented m 3|, I900.

-c. n. OCUMfAUGH.

D008 CHECK.

(Application filed Mar. 29, 1900.)

(No Model.)

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" NITED STATEs PATENT OFFIcE.

DOOR- CHECK.

SPECIFICATION forming of Letters ratent No. 655,001, dated July31, 1900.

- Application filed Mare-h 29,"19 00. Serial No. 19,704. (No model.)

-To all whom it may concern):

Be it known that 1,.CHARLES', HERBERT. OCUMPAUGH, residing at No. 11 Allenstreet, Brighton, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Door=Ohecks and I do hereby declare the following to bee full, clear, and exact description of the invention, such as will enable others skilled in the artto' which it pertains to'makc and use the same.

The invention relatesto door-checks, and has for its object to simplify and cheapensuch devices and increase their durabilityandeffi ci'ency. 7

It consists in the construction hereinafter described and pointed out.

In the accompanying drawings, Figure 1 is: a central section of the device. Fig. 2 is a plan. Figs. 3 and 4 are respectively a plan and elevation of a thimble-valve. Fig. 5 is. a partial section of a modified detail, includ ing a plunger-tube; and-Fig. 6 is a plan of said tube.

Numeral 1 denotes a shell provided with flanges 2 for its attachment to a door-casing.

The bottom of the shell is closed by a spring- -cup 3, which is entered in the shell androtatably held by a screw-ring 5. The cup has a flange 4, situated between the bottom edge of the shell and a flange of the ring 5. The cup can be rotated within the ring by the use of a spanner applied to a suitably-formed hub 7 on the-bottom of the cup,,with the effect to vary the tension of a coiled spring 8, fixed at one end to the cup and at the other to a rotating sleeve 9.

In using the device thesp'ring is put under tension by an arm 10, either integral with sleeve 9 or fixed thereto, by the opening of a door connected in any desired manner to said arm. When the door is released,'the spring closes it, as usual in this class of devices. The sleeve 9 is rotatably held in the top of the shell. 10 is a screw-nut which limits its movement upwardly. Its downward movement is prevented by the shonlder 12.

To the bottom of the spring-cup is fixed integrally by preference a plunger cylinder or tubellfor holdingaliquid, such as an oil.

12 denotes a plunger, and 13 its stem, which is freely movable through a packing 14, situated betweenithe stem and the closed cover of the plunger-cylinder.

15 denotes a lever having its fulcrum at 16 and connected by a link 17 or the like to the' I plunger-stem. A In the present instance the linkis pivoted .to an arm 18, connected to the periphery. of the.plunger-stem. It is also pivotedto the lever 15. Said lever has a fork 20, which loosely embraces one side of a track 19, fixed." to theshell'and eccentrically disposed with respect to the plunger and plunger-cylinder. .The track is raised to avoid as far as practicable the accumulation of dust and to obviate the friction incident to the use of 'a block traveling in a groove, as heretofore practiced. The construction is such that when thedoor is opened and the arm 10 moved and its connected sleeve 9 rotated the forked end of the lever will be forced inwardly and the. plunger raised and the spring put under tension. An opposite or closing movement of the door carries the forked end of the lever 15 outwardly and forces the plunger down, this movement ordinarily being effected by the uncoiling of the spring. The described movements of the plunger are necessarily accompanied by the passage of the liquid in the cylinder through the plunger in opposite directions, the object being, as usual indoorchecks, to. obviate noise and jar by the closing of the door.

21 denotes a port through which the liquid passes downwardly when the door is opened. When the plunger descends, this port is closed by pressure against a valve 22, loosely seated on a thimble valve 23, which is screwed into the open end of the plungerstem. 23 is a regulating-valve adjustable in the stem by means of a key 24, having a milled head 25 and an angular portion 26, engaged with a similarly-shaped opening 27 in the valve. The latter has a slot 28, which communicates with a port 29,that permits the liquid to escape upwardly when the door'is closing. The rapidity of this escape can be regulated by adjusting the valve to put its slot in operative situation with respect to port 29, said slot being suitably varied in its width. i

3O denotes a holding-pawl pivoted in a slot made in a shelhflange 2 and adapted to en "the plunger-cylinder and the spring, constigage teeth 31 in the spring-cup, the shell 1 being cut away at 32 to permit the operation.

ger, sleeve, and other connected parts is rotatably connected to the shell and supported by the screw-ring 5.

The eccentric track. which operates the lun er-actuatin lever issim 1e and is eas of construction and operation as compared with the rotating eccentric rings now in general use. 1

The situation of thevalve-regulating key 24 avoids an opening in the bottom of the plunger-cylinder and is provided for by making the plunger-stem hollow and connecting the plunger-actuating lever to the periphery of the said stem.

The sleeve 9, which is interposed between tutes a main connection between the spring and the door, and, combined with a rotatable plunger, avoids a large part of the friction incident to the connection of the spring to the plunger-cylinder, as heretofore practiced, and the plunger is made rotatable.

In the modification shown in Figs. 5 and 6 the armlO has an extension 10 which surrounds the plunger-tube immediately below a flange 11 provided with slots 33 to receive a pin 34, detachably supported on the arm extension 10 can be varied by disconnecting arm 10 and the plunger-tube and suitably rotating .the'. 'latter.

The tension of the spring 8 Having thus described my invention, what I claim as new, anddesire to secure by Letters Patent, is-- 1. In a door-check, a shell, a spring, a spring-cup having a central integral liquidholding plunger-cylinder, and means of ad justing the tension of the spring independently of the cylinder.

p 2. In a door-check, a shell, a spring and a spring-cup having a central integral plunger-cylinder with a rotatable sleeve around said cylinder. i

3. In a door-check, a spring-cup having a Witnesses: central integral plunger-cylinder, a rotatable sleeve around the cylinder, and a spring attable about the cylinder, the sleeve forming the connection between one end of the spring and the lever.

In a door-check, the combination of a shell containing a spring-chamber, a sleeve,

"a" spring having one end connected to the sleeve, and a vertical plunger-cylinder with a rotatable vertically-moving plunger and plunger-stern.

6. In a door-check, the combination of a door-actuated arm, a plunger, a plunger-cylinder, a spring concentric with said cylinder, apart intermediate the arm and spring and fixed to both at their proximate ends, said part surrounding the plunger-cylinder, a de vice intermediate the armand plunger to actuate the latter, and a shell inclosing the spring and'cylinder. V

7. In adoor-check, the combination of a shell, a door-actuated arm, a spring, a sleeve connecting the arm and spring, anda locking device to limit the upper movement of the sleeve within the shell.

8. In a door-check, the combination of a shell having an eccentric track projecting above its top to avoid accumulation of dust and unnecessary friction, a plunger, a lever connected at one end to the plunger-stem and at the other end loosely embracing said raised track, and a door-actuated arm to move the lever on the eccentric track to operate the plunger.

9. In a door check, the combination'of a and a spring connecting the sleeve and springcup independently of the cylinder.

10. In a door-check, the combination ofan arm, a shell, a plunger, a plunger-cylinder, a spring, and a rotatable spring-cup having with the cylinder an integral closed end to obviate leakage.

Intestimony whereof I have signed this specification in the presence of two subscribing witnesses.

CHARLES HERBERT. 'OOUMPAUGH.

LE. 0. HEMPEL, A. M. ZIMMER. 

